body {
  margin: 0;
  font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  background: #f8fafc;
  color: #111827;
}

.page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px;
  display: grid;
  gap: 14px;
}

.panel {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  padding: 14px;
}

.subtitle {
  color: #6b7280;
  margin: 0 0 8px;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.toolbar select,
.toolbar button {
  border: 1px solid #d1d5db;
  border-radius: 8px;
  padding: 8px 10px;
  background: #fff;
}

.toolbar button {
  cursor: pointer;
  background: #eef7ff;
  border-color: #93c5fd;
}

.link {
  text-decoration: none;
  color: #0369a1;
}

.status {
  margin-top: 10px;
  color: #334155;
}

.graph {
  overflow: auto;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 10px;
  min-height: 220px;
  background: #ffffff;
}

.code {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  background: #0f172a;
  color: #e2e8f0;
  border-radius: 10px;
  padding: 12px;
}